code: def _size_and_scale_factor_strategy():
      return st.one_of(
          st.tuples(_size_strategy(), st.just(None)),
          st.tuples(st.just(None), _scale_factor_strategy()),
          st.tuples(_size_strategy(), _scale_factor_strategy()),
      )
  
imports: from hypothesis import strategies
  import pytest
  import math
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_frontend_test
  from ivy_tests.test_ivy.test_functional.test_nn.test_layers import _assume_tf_dilation_gt_1
  import ivy
label_desc: Use image node_id 4 for calling a global function with example usage: _size_and_scale_factor_strategy() and returns: st